. >>> new developments on the attack in benghazi. we'll get the latest on that. first, we go to cairo. jim is standing by. what is the latest there? >> reporter: hi, willie. it's getting quite noisy here now. several hundred protesters who were setting up camp overnight on tahrir square tried to make another go of it this morning. actually, just about an hour ago, outside the u.s. embassy. they tried to move on the embassy. they fired tear gas. there are concrete blocks blocking off the access to the embassy. it frustrates the crowd even more. a few minutes ago, they marched around the square. they are doing that now chanting, god is great. it's felt like a protest taking place inside a bubble. all this happening near the embassy. this cat and mouse stand off. life goes on normally in the rest of cairo. today, that could change because president morsi and the muslim brotherhood are calling for nationwide protests after friday prayers in a couple hours. these are to take place outside the mosques which take the pressure out of this area here. a lot of protesters l